Spring-hinge



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I J. WOLF.

SPRING HINGE. 110.461,909. Patented 0011.127, 1891.

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J. WOLF. SPRING 11111911.-

No. 461,999. 1 Patented 001. 27,1891.

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UNITED STATES PATENT OFFICE.

JOSEF W'OLF, OF NEWARK, NEV JERSEY.

SPRING-HINGE.

SPECIFICATION forming part of Letters Patent No. 461,909, dated October27, 1891.

Application led July 12, 1890. Renewed June 4,1891. Serial No. 395,041.(No model.)

Ying to be a full, clear, and exact description of the invention, suchas will enable others skilled vin the art to which it appertains to makeand use the same, reference being had to the accompanying drawings, andto letters and Afigu res of reference marked thereon, which Aform 'apart of this specification.

This invention relates to an improved doorhinge, which serves the doublepurpose of an ordinary hinge for hangingV doors, dre., and also as adoor spring and check whereby the door is caused when entirely open tobe reliably locked or held in suchl open position without any furthermechanism other than that contained in one of the hinge leaves or platescomprising the hinge.

The invention consists of a cylinder on one of the leaves of the hinge,provided with a spring-actuated piston, which is in hooked engagementwith the other of the hinge-leaves, whereby the door when partly openedis caused to be automatically closed and also when entirely opened iscaused to Abe held in such position.

The invention is illustrated in the two sheets of drawings herewithaccompanying, in which similar referencedetters are employed to indicatecorresponding parts in each of the several views.

In 'said drawings, Figure 1 represents a front elevation of my improvedhinge as attached to a door and its frame. Fig. 2 is a plan view of theunder side of the hinge detached from the door, showing the arrangementof the several parts in the cylinder on one of the hinge-leaves inhooked engagement with the other of said leaves. Fig. 3 is a sideelevation of the hinge, and Fig. 4t is avertical section of the same,taken` through line .fr in Fig. l. Fig. 5 is a view similar to thatrepresented in Fig. 4, illustrating the mechanism in position when thedoor is held in its opened position by the same; and Fig. 6 is a sideview of the hinge, the parts thereof being represented in a positionwhen they cause the automatic closing of the door. Fig. 7 is' an endview of the hinge, showing the shape of the cylinder and its pistonhead.Figs. S and 9 are atop view and side elevation, respectively, of thehook-shaped hinge-leaf. Fig. lO is a modified form of piston-head, andFig. 11 is a vertical section of the same, taken on line y in saidfigure. On Sheet 2 Fig. l2 iis a top view of my improved hinge,in whichthe two hinge-leaves or plates are pi votally secured to each other by acontinuous pin,instead of two short pins, as shown in the iigures. Fig.13 is a side elevation of the same.

In the drawings, a indicates the door, and b the door-frame.

C is my improved doorhinge, which consists of two leaves or plates c andc', adapted to be secured by means of screws to the door and door-frame,respectively. Said plates or leaves are provided with perforated earsc2, c3, c", and c5, adapted to bel fitted, as shown, and through eachpair of said perforated ears c2 and c3 and c4 and c5 is driven a shortpin d and d', as will be clearly seen from Figs. 1, 2, et seq.

One of the hinge-leaves, as c, is provided with a casing or cylinder c6,which is partly closed on its under side at c7 and open at o8, as shownin Fig. 2. Said cylinder and the hinge-leat` c are preferably east inone piece. Within said cylinder is arranged a rod g, provided at one endwith-a piston g', to which it may be securely riveted, as shown in Figs.4t and 5, or said piston g can be slotted at g2, as in Figs. IO and ll,and the rod g, which in this case is provided with a head or nut, isloosely fitted in said slot. At the other end said rod g connects with abar e, having cross-arms e and e2 arranged at right angles thereto,which form a T-shaped bar by means of the oppositelyplaced links e3 ande4, which are secured by the pin e5 to the end of the rod g and by thepin eG to the T-bar e, thus forming a flexible and pivotal connectionbetween said parts. The leaf c, which, as has been stated, is providedwith the ears cl and c5, has arranged between said ears twoupwardly-extending arms o9 and cw, provided at their free ends withdownwardly-projecting hooks c1I and cl2, as will be clearly seen fromFigs. 2, S, and i).

Then the leaves c and c, forming the hinge C, are in position on thedoor and its frame,

IOO

said T-shaped bar has been connected with said hook-arms o9 and 010, sothat the arm e rests in the hook c11 and the arm e2 within hook cl2.Around the rod g is arranged a spiral springf, between the piston-headand a projection or rib 013, formed in the forward end of the cylinder.

The operation of the spring-actuated lockhinge is as follows: When theseveral parts of the hinge have been secured upon a door and door-frame,leaf c on the door, and leaf c on the frame, or vice Versa, the severalparts of the mechanism are arranged as represented in Figs. 1, 2, 3, and4. When in this position, the spring f is at rest and does not act; butas soon as the door is opened, as indicated in Fig. 6, the leaf c andits hook-shaped arms draw upon the T-shaped arm e, which causes thelatter and the links e3 and e4 to approximately enter between'the armse9 and om and also between the ears c4 and c5, as indicated in Figs. 5and 6, the springf being compressed between the piston-head g and therib cl3, whereby, when the door is only partly opened, as in Fig. 6, itwill be caused to close auto- -f matically, owing to the tendency of thecompressed spring to resume its normal and inoperative position,drawing, through the agency of the rod g and its connecting mechanism,upon said hook-shaped leaf c and securely closing the door in thedirection of arrow 2 in said Fig. 6.

`The arms o9 and c1 are formed at the proper angle to the base of theleaf c', so that when the door is entirely thrown back the action of thespring, which draws upon the rod g and the T-shaped arm e, causes thelatter to act on a point on the hook-shaped arms on the leaf c directlyabove the pivotal axes of the pins passing through the ears on theleaves c and c', whereby the door is entirely held in its open positionand locked therein until closed by a person.

As indicated in Figs. and 5, the under side of the cylinder is partlyclosed at c7, upon which surface the piston-head g reciprocates when thedoor is being opened and closed. Said under side can be entirely closed,if desirable.

In Figs. 12 and 13 I have shown the hingeleaves secured to each other bya continuous pin d2, instead of the separate pins d and d',

as in the gures,in which case the hinge can be used as a combined hingeand door-spring for automatically closing the door, not being adapted tobe used as a door-check to hold thedoor in its entirely-openedposition.-

- As is clearly shown in Fig. 13, the upper edge of the T-shaped arm estrikes said pin d2 when the door has been opened toacertain angle,which prevents 'the same from being thrown entirely open and held inthat position by the spring and the connecting mechanism, as has beendescribed.

My improved hinge is adapted for use on doors of all kinds, serving inthe place of an ordinary hinge and dispensing with the use of separatedoor-springs and other devices for automatically closing the door.Another advantage is that it holds the door reliably in its openposition until closed by a person, which is readily accomplished bytaking hold of the door and giving a sufficient pull to overcome thetension ofthe spring.

' Having thus described my invention, what I claim is- 1. In a colnbinedhinge and door-spring, the hinge leaves or plates-provided with ears forpivotally securing them together, one of said plates having hook-shapedarms, a cylinder on the other leaf, a piston vand spring-actuated rod ins'aid cylinder, a T-arm, and links connected with saidrod, said T-armbeing in pivotal engagement with the hook-arms on the one leaf, for thepurposes set forth.

2. In a combined hinge and door-spring, the hinge leaves or platesprovided with ears for pivotally securing them together, one of saidplates having upwardly -extending hookshaped arms, a cylinder on theother leaf, a spring-actuated rod in said cylinder, a piston having aslot g2 therein, in which said pistonrod is loosely fitted, a T-arm, andlinks connected with said arm, thereby making a iiexible connection,said T-arm being in pivotal engagement with the hook-arms on one leaf,for the purposes set forth.

Intestimony that I claim the invention set forth above I have hereuntoset my hand this 10th day of July, 1890.

JOSEF WOLF.

Witnesses:

FREDK. C. FRAENTZEL, WM. H. CAMFIELD.

